2026 BYD Seal U 1.5 Boost

Overview

• Make: BYD
• Model: Seal U
• Trim: Boost
• Version: 1.5 18.3kWh Boost CVT FWD Euro 6 (s/s) 5dr (214 bhp)
• Year: 2026
• Mileage: 421 miles
• Fuel: Plug-in hybrid (petrol)
• Body: SUV, 5 doors, 5 seats
• Engine: 1.5 litres, 214 bhp
• Gearbox: Automatic (CVT)
• Drive: Front-wheel drive
• Colour: White
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2026 BYD Seal U Boost has covered 421 miles. Its asking price of £26,702 is £1,126 below the AskCar estimate of £27,828. The AskCar estimate uses 853 UK dealer adverts for the BYD Seal U, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 21 days ago, the asking price has dropped by £444. The seller is Vertu BYD Hartlepool, based in Hartlepool. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,126 (4%) under the AskCar estimate of £27,828.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 853 priced BYD Seal U adverts across different ages and specifications, as of 4 November 2026.

A 2026 BYD Seal U with the 1.5 plug-in hybrid engine is typically advertised at £27,000: the median of the 366 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2026 BYD Seal U has been on sale for at least 21 days.

Price history

AskCar first saw this advert on 14 October 2026 at £27,146. Its asking price is now £26,702, £444 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 14 October 2026: £27,146
• 31 October 2026: £26,702

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 1,600 miles lower than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

254 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,742 to £35,595, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 562 miles. Price: £29,900, £3,198 more than this car. Dealer: John Clark BYD Inverness in Inverness. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-ed78f1b9bcb3
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 77 miles. Price: £26,998, £296 more than this car. Dealer: Arnold Clark Edinburgh Seafield Kia / BYD in Edinburgh. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-3d97968b509f
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 57 miles. Price: £26,990, £288 more than this car. Dealer: BYD Brighton in Brighton and Hove. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-d4242955d32c

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue, 6 miles from this car. Mileage: 2,000 miles. Price: £27,498, £796 more than this car. Dealer: Lookers BYD Middlesbrough in Middlesbrough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-15377f2622cd